Telescopic gun-sight.



R. SCHURMANN. TEL'ESCOPIC GUN SIGHT. APPLICATION FILED MOV. l?.

IDIB.

2 SHEETS-SHEET I.

R. SCHURMANN.

TELESCOPIC GUN SIGHT.

APPLICATION FILED NOV. ITI 1913.

Iuwutvd .Ilmo :27, IIIIIS.

2 SHEETS-SHEET Z.

' 3, the carrier RECHARD SCERMANN, OF ESSEN-ON-THE-BUHE,

KEUPE .AETIENGESEIJJSCHAF OF ESSEN-ON-THE-RUHR,

GERMANY, ASSIGNOR TO FRIED.

GERMANY.

TELESCOPIG GUN-SIGHT.

Speeicaton of Letters Patent.

Patenten June 27, icio.

Application iled November l?, 1913. Serial No. 801,496.

To @ZZ vwhom t may con/1era Be it known that RICHARD SCHRMANN, residing at Essen-on-the-Ruhr, Germany, a subject oi the Emperor of Germany, have invented a. certain new and useful improvement in Telescopic Gun-Sights, of which the following is a specification.

This invention relates to improvements in telescopic gun sights.

in the accompanying drawings .is illustrated one embodiment of the invention and Figure l shows a side view partly in section of the sighting device with some of the parts of the gun carriage; Fig. 2 a rear View ot Fig. l; Fig. 3 a section of Fig. 2 along lines 3-3, seenv from above a/nd in larger scale; and Fig. 4 a rear view corresponding to Fig. 3.

This sighting device is provided with a panoramic sight which, in well known manner, is arranged in lying position. rlhe panoramic sight is constructed in such a manner, that on the one lhand the reflector housing A is revoluble relatively to a central housing portion A1 and rotatable simultaneously in relation to the erecting prism o1, see Fig. 3, and can .be locked in various angular positions, and that on the other hand the central housing portion A1 is freely revoluble relatively to the Ihousing portion A1 which carries the eyepiece tube around an axis, which coincides with the axis of revolution of the reflector casing rll`he' erecting prism a2 and the objective M are both fixedly secured in a carrier N, rotatably mounted in the outer housing portion A3. By means of gear Wheels L, Z1 and Z2, Fig.

N is connected with the reiector housing A in such a manner that, when the reflector a1 is rotated, the erecting prism a1 and the objective M rotate in the same direction but at only hallc the angular speed. This arrangement is known to be old and not claimed in the present case. The housing portion A3 is rigidly connected with an arm B1 (rigidly secured to the gun carriage B) in such amanner, that the axis of revolution of the central housing portion A1, and the axis or" the ,"eiiector housing A, coinciding with the first-named axis, are parallel 'means of a worm With the axis of the trunnions of the gun carriage. The central housing portion A1 of the panoramic sight is connected, by means of a link C, with the toothed segment D1 of a. sector elevating gear in such a manner, that a link parallelogram A1, C, D1, D, B B1 A, is formed; and that thereforel the central housing portion A1 of the panoramic sight Will partake in each movement, at the same angular velocity and in the same direction, as that given to the cradle D tgether With the gun barrel, by means of the elevating gear. The toothed arc D1 forming part oi' the elevating gear is rigidly secured on the cradle D.

Between the central housing portion A1 of the panoramic sight and the reflector housing A is inserted in Well known manner a self-locking Worm gear E a4, see Fig. 3, Which is provided with a hand wheel e1, by means of which the reflector housing A may be revolved, relative to the central housing portion A1, in the vertical plane. Through this arrangement it will be possible to give an inclination of the sight line relative to the gun axis that corresponds to the range. To read ofi" the given setting of the sight line as above indicated is provided a range scale a5 on the reiector housing A and a mark o6 engraved on the central housing portion A1. The objective reiector a, see Fig. 3, Which is mounted to be adjusted in the reector housing A around an axis perpendicular to theaxis of revolution of the reflector housing may be swung a certain angle each side of its middle position, by F carrying a hand Wheel f1, which Worm is in mesh With Worm teeth a? on the cover a1 of the reiector a7. As the sight line thus can be moved in a plane perpendicularA to the elevating plane, this arrangement enables any necessary sideWise displacements to be taken account of. The magnitude of the necessary displacements may be read ofi on a scale L10 arranged on the cover as by means of a mark 0:11 situated on' the reflector housing A.

The manner of aiming a gun provided device Will'be description,

with the described sighting evident from the abgve given y central housing portion A1 in the vertical direction only moves in conjunction with the gun barrel.

As will be evident from the above description, the principal advantage of the present sighting device over other known sighting devices consists therein that the two parts which, by their mutual displacement cause the range adjustment, 'are both formed by parts of the telescope, whereby it will be unnecessary to supply a separate elevating bar or separate sight carrier corresponding to said bar.

L lVithout deviation from the subject matter of the invention, the sight parts A1 and A3 might be rigidly connected with each.

other, so that only the reflector housing might be revoluble relative to the .housing portion which supports the eye-piece-tube. Obviously the housing portion A3 must in the latter case not be rigidly secured to the arm B1, but instead be revoluble thereto so i that the central housing portion A1 will be able to partake in each movement of the gun barrel; The illustrated embodiment of the invention possesses however the advantage, that the eyc-piece-tube remains stationary with the gun barrel in any elevation and that the eye may therefore look through the eye-piece always in a lhorizontal direction.

Naturally the central housing portion A1 of the. panoramic telescope might also be applied directly on the. cradle in the same manner as the socket of ancordinary sight, and in this case too, may be connected rigidly or revolubly with the housing portion,

JX which supports the cye-piece-tube.

I claim:

l. A telescopic gun sight having alying panoramic sight, comprising an eye-piece rigidly mounted on a non-elevatingpart of the gun carriage, a reli'cctor and a casing therefor, a carrier having an erecting prism and an objective, a housing mpunted coaxially with said casing, said casing, carrier and housing being revoluble relatively to each other and to said eyepiece. a member positively connecting said housing with a part ot' the gun carriage that partakcs in the elevation of the gun barrel. whereby said housing` will receive. angular movement s vnchronously with and in the same direction as the gun barrel.

A telescopic gun sight having a lying panoramic sight (--om/prising au eye-piece rigidly mounted on a non'alovating part of :Ln gun carriage. :i /reflecto and a casing eret'or, a housing mounted'eoaxially withl said casing, said casing and housing being relatively i'evoluble, a combined objective and erecting prism carrier being revolublc at different speed relative to said housing coaxially with the axis of revolution of said `reflector casing; -a member positively con- YA'the gun training, a refiector and a casing therefor, a combined objective and erecting prism carrier, a housing mounted coaxially with said casing, said casing, carrier, and housing being revoliible relatively to each other and to said eyepiece; a carrier for said reflector revolubly mounted Within said casing around an axis which is perpendieir lar to the axis of revolution of said casing, a train of gear wheels between said combined carrier and said casing, whereby said combined carrier is revoluble at different speed but in the same direction relative to said housing and coaxially with the axis of revolution of said reflector casing, a member positively connecting said housing with a part of the gun carriage that partakes in the eleyation of the gun barrel, whereby said housing will receive angular movement synchronously with and in the same direction as the gun bairel.

4. A telescopic gun sighting device having a lying panoramic sight, said sight com- `prising a housing containing a reflector and arhousing portion connected coaxially with thev refiector housing, said reflector housing and said housing portion forming two parts rotatable relatively to each other, one of these parts being provided with a range scale and the other with a mai-k, the housing portion having positive connection with a part of the gun partaking of the gun barrel elevation, and an eyepiece connected with the housing portion.

5. A telescopic gun sighting device having a lying panoramic sight,- said sight comprising a casing containing a retiector, a first housing portion pivotally connected to the reflector casing land a second housing portion relatively which the first housing portion is rotatable aifound an axiscoinciding with the axis of rotation of the reflector easing, said second housing portion supporting an eye-piece carrier, the second housing portion being mounted on a nonelevating part oiu the gun carriagiA and the first housing portion having positive connection with a part of the gun carriage partaking ot' the gun barrel elevation, and a positive gearing connection between said first housing portion and said casing, ,Whereica' by sai@ iss@ housing pcrton and she casing; mm1, Ggmaany, his z *.v wil receive angua movement Symho- 1913,. 'nously wh, in the same direction A k U in, @f1-51,". mn w 'he gun baud, he sond housing portion Br/GAAN* UUAUR' AA J' 5 being non-miam L e ibhe direction of h@ i?? prese-naa oa-W gun bmw-el elem-'siem HELEN wmzj The fcregoing .epecifcation signed at Bal"- V JmJlUs FESTNEE. 

